Abstract
The cyclic stability of LiNi0.5Mn1.5O4 at elevated temperature is a crucial factor for commercial Li-ion batteries. To improve the capacity retention of the spinel cathode material, surface modification has been widely recognized as one of the most effective approaches. In this work, a continuous and uniform layer assembled with nanoscale Li4Ti5O12 particles was coated on LiNi0.5Mn1.5O4 via hydrothermal method with moderate temperature. With a coating quantity of 0.5 wt%, the as-prepared LiNi0.5Mn1.5O4@ Li4Ti5O12 delivers an initial special discharge capacity of 141.2 mAh g−1 at 0.2 C and retention of 93.66% after 500 cycles at 1 C at room temperature, and it exhibits capacity retention of 97.03% after 140 cycles at 1 C at 55 °C. In addition to the protective effect against electrolyte, from observation on the surface feature during long term lithium insertion/extraction process, the Li4Ti5O12 coating layer suppresses the continuous growth of a dense and cathode electrolyte interfaces from the electrolyte decomposition.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
